December completes the flip. The Pacific has returned to north and north-west swell, Oaxaca is out of season for the next four months, and Sayulita is where the country works again.
What changes this year compared to January is who else is there. Sayulita is the least remote surf town on either Mexican coast and the easiest one to bring somebody who does not surf, which in December means cobbled streets full of people, restaurants booked, and a point that has a queue on it for the first time since spring.
The water has come off its October high to 26°C on the north coast, against 28°C in Oaxaca, and the gap keeps widening until March. December is the last comfortable month before Nayarit becomes the cooler of the two by a margin anybody notices.

